#!/usr/bin/python

number = input("Please Enter The Score: ")
def main(number):
	if number >= 90 and  number <=100:
		print 'Your Grade is: "A"'
	elif number >= 80 and number <=90:
		print 'Your Grade is: "B"'
	elif number >= 70 and number <=80:
		print 'Your Grade is: "C"'
	elif number >= 60 and number <=70:
		print 'Your Grade is: "D"'
	elif number <= 60:
		print 'Your Grade is: "F"'
main(number)
